Inductance unit



ecq ,1923.

Ag TAYLOR INDUCTANCE UNT June 18 Filed W S M Patented Dec. 1.8, 1923;

ALEXANDER TAYLOR, OF'FLUSHING, NE'W` YORK.

INDUCTANCE UNIT.

vApplication flied June 181921.' `Serial No. 473,195.

To all whom it may cof/wem:

Be it known' that I, ALEXANDER IAYr..on, a citizen of the United States, residing at- .Flushing7 in the county of Queens and State )if New ork, have invented certain new and useful Improvements inln'ductance' Units of which the following is a full, clear, and exact description.

This invention relates to inductance units and has particular value when these units are -used in wireless vtelegraphy and telephony as the primary, secondary and tickler coils, which are adjustable toward and from one another in a manner well known in the art.

An object of the invention is to provide an induetance unit which will have a minimum selfinduction and-distributed capacity and thereby a minimum radio.

frequency resistance, which;4 enables more selective tuning of the coils and which has a maximum range of resonance. A further rovidea unit of this type object is to D le, sensitive, .elicient and inwhich is dura expensive.4 l .will be apparent from the following detailed'description of one embodiment of th'einvention and the 'novel features will.be

' particularly. pointed out in claims.

y The invention comprises a comparatively thin sheet of a suitabledielectri material which acts s a form or frame upon which a conductor is wound cornerwise and alternately across opposite faces so that/there will be no crossing of the conducto` upon any face and the. ortion 'of the windingupon one face wil be transverse to that upon theother face. By this arrangenient the crossing occurs when the conductor portions are separated by the thickness'o the dielectric. The sheet may have any suitable shape and preferably is provided,

ill

with'approxiinately rectangu ly dis osed grooves in its edges in which the con uctor is wound 4to prevent its displacement along the ed', s.

i 'In t e drawing,

Fig. l is a front elevation of a sheet of delehtric material upon which'the conduc. may beA wound to provide an inductanee unit.

Fi 2 isa side elevation'otl the same, and i 3 is a front'elevation of a complete unit with a single layer upon each face of the sheet.

Other objects and advantagesv approximately rectangularly disposed withrespect to one another. The sheet at two adjacent corners is provided with extensionsA 3 and 4 carrying terminal conncctors and 6 to which external .circuit wires 7v and 8 may be connected. From one of theif ter ininal .connectors such as 6, an insulated conductor 9 having electrical connection therewith passes toward the adjacent end of an adjacent notch such as that between the extensions, and then' cornerwise across one. face to the further end of one of the next adjacentnotches', such as at the other notch adjacent extension 3, then over the edges ot the sheet at that notch, then coriierwise across the other face fof the sheet to the adjacent end of the nlext'adjacent notch (proceeding peripherally in the same direction), then over the edge in the notch and sie:V

cornerwise across the first face and parallel with the first cornerwis'e stretch of the conductor, then over the edge at the notch and' across the second face parallel .withV the other stretch upon that face to the further side of the first stretch laid coi-nerwise, then over the edge within the notch and parallel with and'along the side of the first cornerlwise stretch of the conductor, proceedingl as before to cause the conductor to be laid progressively inward upon one face and progressively outward upon the other face.

crease the vselfinduction and distributed capacity and increase the range of resonance. The longest stretches of the conductor upon both faces are nearest the center of the sheet and coil and therefore the path 'of 'A the flux', which mal es the 'unit unusually sensitive, The portion of the coil upon one face, by crossing the portion upon the other face at approximately right angles, will out 'the self induction approximately in' half without decreasing the effect upon the same lio - resonance. Ifsdesired, more than one'layer bythe flux passing through the center of the unit coil or without decreasing the*l flux set up -by the assage of a current through'the unit. .lith this construction the actual resistance of the coil is reduced more nearly to that "of its ohmic resistance with a resulting' increase in. its range of may be laid, with the layers oneachlface parallel or atan angle.

. It 'willbe understood that various lchanges in the details and arangements of. theA illustrated embodimentma bemade by those skilled in the art within the and scope of the invention.

I claim:v 1. An induct'ance unit comprisingna thin sheet of a suitable dielectric material, and

en insulated conductor wound across the 'faces thereof with the portion of the wind- 'ing upon one face extending in a direction transve'i-selyof that uponthe other face.

. 2. .Anlinductance unitvcomprising athin sheetvof a suitable dielectric material and a conductor wound as a layeracross the faces thereof, with thel portions uponeach face arranged in the same plane and. substantially parallel to .o ne another and the portion upon one face extending in a di- -rection transversely of that upon Athe other face.

3. Aninductanceumt comprising a .thin

i @sheet ofl a suitabledielectric material,\and

a conductor wound 4corner-.wise and alternately across the opposite faoesot the sheet, theywindin progressing outwardly upon one .face an .inwardly upon the other face. `4. An inductance-unit comprising athin sheet of a'suitable dielectric material, and v a conductor woun'd' alternately across op# posite faces of4v the sheet, the direction of winding upon one face being transverse to that of the other face.,

5. Aninductance unitcomprising a" thin sheet of a suitable dielectric material, 'and aconductor wound `alternately across oppositefaces of the-sheet, the direction of 'winding upon one face'being transverse to that of the other face, and progressmg 1nwardly upon one face while progressing outwardly upon the -otherface.

6. An' inductance unit comprising a thm principle 4-face of the sheet, an

sheet of dielectricrnaterial, and a conductor; wound vas a'4 layer alternately and lcorner-j wise across the opposite faces of the sheet, the conductor being laid in substantially parallel positions upon each v'face with the l direction. of windingupon one face making an angle of approximately 90d with the diiection of the correspondinggportion .of

'the windinr upon the opposite face.

7. An inductanceunit comprising a thin' sheet of dielectrie-material,I and a quad4 rangularA winding -of a conductor thereon, t-Woopposite side portions of tliequad-- rangularjvinding being disposed upon lone allel to one another and. theother two. op-

site side-portions of the-winding isiosedupon the .opposite face of the sheet an substantially parallel to one another.

substantially par- 8. An inductance unit comprising asheet,

of dielectric material having four approxi- 'mately rectangularly disposed notches in its edges, and va conductor wound in said notches and alternately across the faces o the sheet, the winding progressing inwardly.4

-upon one face while nPOXl the other face. ,v

`9. 'An inductanoe unit comprising a coiled progressing outwardly 'insulated conductor having portions lying' woundprogressively inward and 'fixe other Y portion being -wound progressive-2y- 'foutward. I

11. An inductance unit compriain acoiled insulated conductor havin the s a of a comparatively thin rhombo edron, t ey conductor beingr wound alternately in posits faces o f the rhombohedron, and

portion in each face being transverse to that.'

in the other face.

my signature.

ALEXANDER TAYLon.

In witness whereof, I hereunto subscribe` 

